【摘要】 利用NP-多胺基磷酸树脂作为浓缩柱,结合流动注射技术,对地面水中痕量的Cu、Zn、Pb、 Cd进行富集,用火焰原子吸收法进行测定,对Cu、Zn、Pb、Cd四种常测重金属元素,本方法的变异系数分别为 2.0％、 3.6％、2.1％和 4.6％。富集倍率可以达到两个数量级,接近石墨炉原子吸收法的灵敏度,有较好的精密度。更多还原

【Abstract】 The Trace Cu, Zn, Pb and Cd of surface wat-er was concentrated by a new kind of resin as well as on-line flow injection and determinted by flam atom absorption spectrometry, The coefficients of variation of Cu, Zn, Pb and Cd were 2.0%, 3.6%, 2.1% and 4.6% respectively. The concentration rate can approach the sensitivity of graphite atom absorption.更多还原